Q.
Figure shows a cubical room $ABCD$ with the wall $CD$ as a plane mirror. Each side of the room is $3m$. We place is camera at the midpoint of the wall $AB$. At what distance should the camera be focused to photograph an object placed at $A$
A) 1.5 $m$
B) 3 $m$
C) 6 $m$
D) More than $6\ m$
Explanation
(d) According to the following figure distance of image $I$ from camera
$= \sqrt{(6)^{2} + (1.5)^{2}} = 6.18\ m$
[image:9_image101.png]
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.